Home / 158,384.58-218,559.51-90,385.62

Finding the Fourth Proportional to 158,384.58, 218,559.51 and 90,385.62

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Solution

The fourth proportional to 158,384.58, 218,559.51 and 90,385.62 is: 124,725.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,384.58 : 218,559.51 = 90,385.62 : x
  2. Step 2: Convert to fraction form
    158,384.58/218,559.51 = 90,385.62/x
  3. Step 3: Cross multiply
    158,384.58x = 218,559.51 × 90,385.62
  4. Step 4: Simplify right side
    158,384.58x = 19,754,636,818.25
  5. Step 5: Solve for x
    x = 19,754,636,818.25/158,384.58
  6. Step 6: Final answer
    x = 124,725.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.